Silencing means for flushing rims



Oct. 23, 1934. Q L KOHLER ET AL 1,977,797

' SILENCING MEANS FOR FLUSHING RIMS Filed Sept. 13, 1933 cm/U EUQDUN @Em/1N ,MW Eg MMWW TTURNE/ Patented Oct. 23, 1934 UNITED STATES PATENT FFICIE'.4

Claims.

Our invention relates to improvements in ilushing rims for water closetl bowls and the like, and the object of our invention is to provide `means for silencing the operation of said iush- 6 ing rims without seriously impairing the efficiency communicating thereof.

We attain this object by the means illustrated in the accompanying drawing, in which Figure 1 is a side view, partly in section, of a water closet bowl embodying our invention; Fig. 2, a sectional view of a flushing rim embodying one form oi the invention; and Figs. 3 and 4, respectively, a sectional view along the lines 3-3 of Fig. 4 and a bottom view of a ilushing rim,

vshowing a modied form of the invention.

In the drawing the numeral 1 indicates a water closet bowl provided with the ushing rim 2, having a hollowed-out portion or channel 3 which has communication at 9 with the reservoir `1C or source of water supply to the bowl. The

lower portion of the flushing rim is provided, at suitably spaced intervals, with a plurality of rim flush holes 4, providing communication between the channel 3 and the interior of the bowl and through which water is discharged upon the flushing of the bowl, thus cleansing the sides of the bowl. It will be seen that the rim 2 is thus enclosed and has communication with the exterior atmosphere only through the passageway 9 and the rim rlush holes 4.

The structure thus far described is a conventional one and, as is well known, the flushing of this type of water closet bowl is ordinarily .attended with considerable noise which, :for obvious reasons, is highly objectionable. We have discovered that a large portion of this noise is caused by the operation of the flushing rim in the following manner.

Upon iiushing the bowl water is admitted to the flushing rim 2 and, in order to obtain a sufficient velocity of discharge from the rim flush holes 4 to insure adequate cleansing of the bowl, it is necessary that the channel 3 be entirely lled with water. The water entering the Vchannel 3 naturally lls the lower part of the channel iirst, as shown in Fig. 2, sealing the rim flush holes 4 and entrapping the air with which the channel 3 is lled in the upper portion of the channel.

'As the channel 3 continues to ll with water,

vent whereby the air contained in the channel 3 may have easy access to the exterior atmosphere. so that it is not necessary that this air be forced through the water, thus'materially silencing the operation of the flushing rim.

One embodiment of the improvement is illustrated in Fig. 2. In this embodiment one or more of the rim flush holes.4 is provided with a silencer tube or vent tube 5 extending therethrough to the upper portion of the channel 3. The silencer tube is preferably a metal tube shaped to correspond to the shape of the rim flush hole .4. It is preferably of such size as toV be slightly compressed upon insertion into the rim flush hole 4 so that its own elasticity holds it in place or it may be, if desired, cemented or otherwise held in place. The silencer tube 5- acts as an air vent and allows the air to escape from the upper portion of the channel 3 through the silencer tube 5 as shown by the arrow in Fig. 2. When the channel ,3 completely' fills, water is discharged through the silencer tube 5 in the same manner as through the rim ush holes 4. Thus the eliciency of the ushing rim is not materially impaired. Since the silencer tube 5 may be inserted after the manufacture of the bowl is completed and requires no changes in the structure of the bowl, this method is adaptable for silencing water closet bowls now in use as well as those whic may be manufactured hereafter.

The modification illustrated in Figs. 3 and 4 illustrates one method by which the improvement may be incorporated in the flushing rimduring the manufacture thereof.- In this embodiment the Viiushing rim is provided at 6 with the dam 7 which extends upwardly into the channel 3. Although, as shown, the dam 7 extends to the top of the channel 3 and bifurcates it, the specie form of the dam '7 is capable of great modiiication and it need not necessarily extend completely to the top of the channel 3. The dam 7 is provided with the vent passageways 8 providing communication between the channel 3 and the exterior atmosphere and providing a vent for the air as indicated by the arrow in Fig. 3.

It will be understood that we do not limit ourselves to the specific structures illustrated and described, butclaim all modifications thereof within the spirit of our invention and the scope of the appended claims.

We claim:

1. In combination in a water closet bowl, a flushing rim having a channel therein, means for providing communication between said channel a source of water supply,

and a water supply, a plurality of rim iiush holes in the lower portion of said flushing rim and a silencer tube extending through one of said rim flush holes into said channel, said channel being enclosed and having communication with the exterior atmosphere only through said communicating means, said rim iiush holes and said silencer tube.

2. In combination in a water closet bowl, a flushingk rim having a channel therein, means. for providing communication between said channel and a water supply, a plurality oi rim flush'holes in the lower portion of said flushing rim and a silencer tube extending through one of said rim flush holes to a point in the upper portion of said channel, said channel being enclosed andk having communication with the exterior atmosphere only through said communicating means, said rim ilush holes and said silencer tube. n

3. In a water closet bowl, the combination of a flushing rim, a channel in said flushing rim, means for providing communication between said channel and a water supply, said ushing rim being provided with a plurality of rim flush holes extendingbetween said channel and the lowei` portion of said .flushing rim and a silencer tube extending through one of said rim flush holes to a point in the 'upper portion of saidchannel, said channel having communication with the exterior atmosphere only through said communicating means, said rim flush holes and said silencer tube.

i.A In a water closet bowl, thecombination of a iiushing rim, a channel in said flushing rim, means for providing communication between said channell and a water supply, a plurality of rim flush holesin'said rim and a silencer tube extending through one of said'rim ilush holes to a point in the upper portion.v of 4said channel, said communicatingfmeans and said rim flush holes being so positioned as to be closed by the inflow of water upon the flushing of the bowl.

5. In a water closet bowl, the combination of a flushing rim, a channel therein, means for providing communication between said channel and holes extending between said channel and the. lower portion of said flushing rim, said communieating means and said rim flush holes. being so positioned as to be closed by water upon'initia- `tion of the flushing of the bowl, and means for venting the air thus entrapped in said channel.

6. In a water closet bowl,` the combination of va iiushing rim provided with a plurality of rim flush f holes, a channel therein, means for providing communication between said channel and a source of water supply, said channel being completelyena plurality of rim iiush closed except for said rim flush holes and said communicating means and said rim ush holes being so positioned as to be closed by water upon initiation of the flushing of the bowl whereby the air contained in said channel is entrapped and a silencer tube adapted to provide communication between the upper portion of said channel and the exterior atmosphere whereby to allow the escape of said entrapped air. l

:'7.. In a water closet bowl of the class comprising a iiushing rim provided with a plurality of rim flush holes, a channel in said flushing rim and means for providing communication between said channel and a source or" water supply and wherein said channel is completely enclosed except for said communicating means and said rim ush holes whereby the air contained in said channel is entrapped by the closing of said rim ilush holes and said communicating means by water upon the ushing of said water closet bowl, the combination with said flushing rim of a silencer tube extending from the bottom portion of saidflushing rim to the upper portion of said channelwhereby -to provide a vent for said entrappedair. f

8. A method of silencing water closet bowlsy comprising manufacturingvsaid bowles with a flushing rim having a channeltherein and provided with a plurality of' rim flush holes and, after completion of said manufacture, inserting 105 a silencer tube through one or more of said rim flush holes into the upper portionof said chan-. nelwhereby to vent the upper portion vof ,y said channel.

9. A method of silencing water closet bowls 110 comprising manufacturing said bowls with a flushing rim having a channel therein and providedwith a plurality of rim flush holes and, after completion-of said manufacture, inserting a metal silencer tube through one ormore Yof said 115 rimy flush holes into 'the upper portion of said channel whereby to vent the upper portion of saidv channel. -f v 10. A method of silencing water closet bowls comprising manufacturing said bowls with a 120 ilushing rim having a channel therein and provided with a plurality of rim ush holes and,y after completion of said manufacture, inserting a silencer tube through one or more of said rim flush holes, into -theupper portion of said channel 125 whereby to vent the upper portion of said chan-l nel, said silencer tube being of such size and elasticity asto beretained in position in saidi rim flush hole by its own elasticity.

CARL J. Koruna. 130 GORDON P. Gavin. 

